RU2384516C2 - Lift-and-carry transfer mechanism - Google Patents

Abstract

FIELD: transport. ^ SUBSTANCE: mechanism incorporates two suspended parallel guides; two bearing units; every such unit is connected to the proper guide and can move lengthwise. Connecting unit is a hinge connection of every bearing unit with the proper end of axle. Fixing element is coupled with the axle in order to hold the hoist. Connecting unit incorporates a universal hinge used to compensate rotary and lateral movement of axle, which contains a carrier hinged to axle and bearing unit by means of ball bearing. In compliance with the second version, mechanism incorporates two parallel guides which can be fixed to the superstructure. Every bearing unit incorporates, at least, one fixing plate which can move along the guide by means of rollers. Suspension is rigidly fixed with every such fixing plate. Axle can be connected and move relatively the bearing units. Bracket is rigidly fixed to the axle end. Connecting unit is coupled with the axle in order to hold the hoist and can move lengthwise the axle. Carrier is hinged to the suspension by means of ball bearing and hinged to the axle bracket by means of fixing element and suspension arranged between carrier and axle bracket. ^ EFFECT: elimination of axle seizure. ^ 26 cl, 6 dwg

Description

The scope of the invention

The present invention generally relates to an improved material handling device. In particular, the invention is applicable to a hand-operated overhead or bridge hoisting and transport device and is intended to simplify the work of the operator servicing this device. Therefore, the invention is described below with reference to use in this area. However, it should be pointed out that the invention has wider application and is not limited to this particular use case.

BACKGROUND OF THE INVENTION

Manual overhead hoisting-and-transport devices, such as gantry or bridge cranes, are widely used in many industries and in various fields of activity for lifting and moving various objects. Overhead hoisting devices can be designed to lift and move any load.

Known to date, overhead hoisting-and-transport devices generally include a crane suspended from a trolley, which, in turn, is suspended from at least one bridge and mounted for longitudinal movement along this bridge. The specified at least one bridge with the possibility of movement is installed, usually suspended, at both ends on two parallel rails or rails, which are usually installed on the ceiling of the building or on the ceiling structure. It is also possible to install these rails or rails (hereinafter referred to for brevity only as rails) on a steel superstructure. Such fastening is especially useful in cases where the building ceiling or floor structure is not designed for additional load.

Known handling devices have problems when the operator tries to start moving the bridge relative to the rails in any direction. The force required to effect such a movement is often quite significant, which is at least partly due to the fact that the movement of the other end of the bridge is caused. This leads to the fact that the bridge is rotated relative to the fixed guides and thereby jammed, and its further movement stops.

Another problem inherent in the known lifting and handling devices is that the guides during their installation must be aligned parallel to each other or very close to the parallel arrangement. If the parallelism of the guides is not observed, the bridge also tends to jam in the guides with a stop of further movement.

The purpose of the invention

The aim of the invention is to overcome or reduce at least one of these problems inherent in lifting devices, or to create a favorable choice for the consumer.

SUMMARY OF THE INVENTION

In one aspect, the present invention provides a lifting device, comprising:

two parallel guides,

the bearing node associated with each specified guide and installed with the ability to move along its length,

a connecting node pivotally connecting each bearing node to one end of the bridge, and

bridge fasteners

moreover, the connecting node contains a universal hinge to compensate for the rotary and lateral movement of the bridge when applying force to the mounting means.

The fastening means is suitably attached to the trolley located on the bridge with the possibility of movement along it.

The lifting device can be rigidly attached to the bridge. However, in a more preferred embodiment, the lifting device is mounted to move along the bridge on a trolley. This design provides greater maneuverability of the lifting device. The lifting device can be moved by any suitable means. In the most preferred embodiment, the movement of the lifting device relative to the bridge is carried out manually. However, it can also be carried out by, for example, an electric drive.

In a preferred case, the lifting device is a crane. Raising and lowering this crane to lift the load can be carried out using any suitable means. In the most contemplated embodiments of the invention, a crane with manual and / or electric drive can be used to raise and lower objects.

It should be noted that the proposed lifting device does not include either a lifting device or any part thereof. The inclusion of a lifting device in the description of the present invention is only due to the need to compile this description in relation to a specific area.

Most preferably, each bridge is mounted with the possibility of longitudinal displacement relative to the bearing nodes. This design further prevents jamming of these devices on the rails or in the rails. In one preferred case, the longitudinal displacement is provided by means of a biasing bracket pivotally connected by two ends to the bridge and to the bearing unit, respectively. However, the longitudinal displacement can be carried out using any other suitable device.

The connection of the bearing nodes with the bridge can be performed in any suitable way using a universal joint. The connecting unit provides the ability to start moving the bearing nodes along one rail before moving the bearing nodes along the other rail or other guides. The connecting unit effectively compensates for the movement of the bridge in the transverse and axial directions and provides free longitudinal movement of the bridge along the guides. It was found that this reduces the force required to start moving the bearing nodes. It was also found that this reduces the likelihood of jamming of the bearing nodes on the guides or in the guides. The biasing bracket is pivotally attached to the bridge bracket rigidly attached to this bridge.

Preferably, the bridge comprises at least one substantially horizontal beam or truss, which may have any suitable profile, including a T-profile or an open thin-walled C-shaped profile. A single bridge can be used to hold the lifting device. However, it is also possible to use two or more bridges, which allows for the same load capacity to increase the length of the bridge and, in some cases, due to this provide an advantage. The use of at least two bridges also provides the possibility of lifting heavier loads, as well as the use of a lifting device with a lower overall height.

In one particularly preferred embodiment, the bearing units include guide rollers designed to provide longitudinal movement of these devices along the guide. However, it should be noted that the carrier assembly may have any other suitable shape and / or include part of any other suitable shape.

Bearing nodes are made with the possibility of movement relative to the guides by any practically applicable means. And although in the most preferred embodiment, the bearing nodes are made with the possibility of their movement relative to the guides, carried out manually, it should be noted that these devices can be made with the possibility of their movement relative to the guides, for example, by means of an electric drive.

In the hoisting-and-transport device, any practically applicable number of guides can be used. However, the most preferred is the use of two guides between which the bridge passes.

The guides can be of any suitable length and any suitable profile or cross section. The guide can be made in the form of a thin-walled hollow profile of a C-shaped section with an open channel and internal guide surfaces, or in the form of a profile of a T-section with external guide surfaces.

Furthermore, the rails can be fixed at any suitable height by any suitable means. In one embodiment, the rails can be mounted on the roof of the building and / or on the ceiling or on a specially constructed superstructure.

Below, with reference to the attached drawings, one embodiment of the invention is described in more detail. Obviously, the detailed design shown in the drawings and in the following description does not replace the general concept of the invention set forth in the previous part of the description.

Brief Description of the Drawings

Embodiments of the invention are described below with reference to the attached drawings, in which:

figure 1 depicts a perspective view of a suspension lifting device in accordance with one embodiment of the invention;

figure 2 depicts a front view of the bearing node shown in figure 1;

figure 3 depicts a view in partial section of the bearing node shown in figure 2;

4 is a perspective view of a suspension lifting device in accordance with another embodiment of the invention;

figure 5 depicts a front view of the bearing node shown in figure 4; and

Fig.6 depicts a partially cutaway view of the carrier assembly shown in Fig.5.

Detailed Description of Preferred Embodiments

Figure 1 shows a lifting device 10, to which, using fastening means 12, a lifting device made in the form of a crane (not shown) with a manual drive can be suspended. The fastening means 12 may be made in the form of a hook, chain or any other suitable device. It should be noted that the lifting device can be any. For example, it may be a crane with a manual or electric drive.

The fastening means 12 is attached to the trolley 13, suspended from the bridge 14 with the possibility of movement. The bridge 14 can be made in the form of a profile with an open channel, in the form of an I-beam or have any other suitable shape. The trolley 13 has rollers, which are wheels, ball bearings or other suitable means of movement. The rollers can roll in the longitudinal direction along the bridge 14. They can be of any suitable shape. In addition, in order for the cart rollers to move silently, their rolling surfaces can be coated with plastic. It is also possible to make rollers, including their rolling surface, of steel. In addition, instead of the rollers, other mechanisms can be used to enable the cart 13 to be moved along the length of the bridge 14.

The fastening means 12 passes through an opening 16 made on the lower side of the bridge 14. Thus, the fastening means 12 and the crane are mounted to move along the length of the bridge 14. If there is no groove in the bridge, the fastening means 12 is connected to the carriage 13 or to the bridge 14.

It should be noted that the fastening means 12 can be connected with the possibility of movement, at least two bridges 14.

There are two essentially parallel guides 18, 20, and the bridge 14 is mounted with the possibility of longitudinal movement relative to these guides. In the embodiment shown in the drawings, the bridge 14 is movably mounted relative to the guides 18, 20, carried out manually. However, it should be noted once again that the movement of the bridge 14 relative to the guides 18, 20 can be carried out using an electric drive.

The guides 18, 20 shown in the drawings, made of a profile of a C-shaped section with an open channel, have holes 22, 24, respectively.

In the embodiment shown in the drawings, the guides 18, 20 are rigidly attached to the ceiling of the building, to the roof, or to a separate superstructure (not shown). However, it should be noted that, if necessary, the guides 18, 20 can be made with the possibility of some movement relative to their mountings.

The bridge 14 contains the bearing units 26, 28, made with the possibility of movement along the guides 18, 20, respectively. The relative position and design of the bearing unit 26 and the guide 18 are essentially identical to the relative position and structure of the bearing unit 28 and the guide 20. Therefore, the bearing unit the further description, in particular with reference to FIGS. 3 and 4, relates only to the support unit 26 and the guide 18.

The guides 18, 20 shown in FIG. 1 have an open channel profile and, therefore, comprise an internal guide system. It should be noted, however, that the guides 18, 20 may have any other suitable profile, including a T-profile or a profile with external guides, as shown in FIGS. 4, 5 and 6.

The bearing assembly 26 or a similar device is mounted to move along the guides 18, 20 and has at least one mounting plate 30 made with the possibility of longitudinal movement along the guide 18 using rollers 32, 34, 36, 38 attached to the plate 30 with the possibility of rotation. Bearing units 26, 28 support the weight of the bridge 14 and the crane (not shown), which, in turn, is held by the guides 18, 20. An additional mounting plate 30 mounted outside the profile can be used (when guides are made in the form of T-beams).

Preferably, the rollers 32, 34, 36, 38 have tapering surfaces to ensure that these rollers roll effectively along the guides 18, 20. The rolling surfaces of the rollers 32, 34, 36, 38 are coated with plastic (or rubber) to reduce noise when they roll. However, it should be noted that there is no strict need for plastic coating of the rolling surfaces of the rollers 32, 34, 36, 38. On the contrary, the rollers 32, 34, 36, 38 can have, for example, steel rolling surfaces.

In addition, it should be noted that instead of rollers 32, 34, 36, 38, other suitable devices, such as bearings, may be used.

Existing hoisting devices tend to jam when the operator begins to move the bridge, similar to the bridge 14, along the guides, similar to the guides 18, 20. In particular, this phenomenon occurs due to the rigid connection of the bridge to the load-bearing assembly in existing hoisting devices .

To solve this problem, the present invention includes an offset arm 40 made of mild steel or of higher quality steel, typically a steel plate or strip. The bracket 40 may also be made of any other suitable material. The bracket 40 is pivotally connected to the suspension 42, rigidly attached (by any suitable means) to the plate 30. The drawings show that the plate 30 is welded to the suspension 42, however, other means of rigid fixing, for example bolts, are possible. The connection between the bracket 40 and the suspension 42 is made by means of a ball bearing 44 held in a seat 46 located respectively in the bracket 40 and the suspension 42. The support 44 can be made of any suitable steel or any other suitable material. To minimize friction, the bearing surface of the support is made of plastic, for example, nylon, but it can also be made of other suitable materials.

The bracket 40 is pivotally connected to a bracket 50 (see FIGS. 2 and 3), which, in turn, is firmly attached to one end of the bridge 14. The bracket 50 is made of steel. It can be made of steel of any suitable grade (or of any other material). The bracket 40 is pivotally connected to the bracket 50 by two fasteners 52, 54 by means of suspensions 56, 58. Elements 52, 54 provide a swivel connection between the bracket 40 and the bracket 50.

The described construction forms a universal joint providing the necessary relative rotary and lateral movement between the bearing assembly 26, 28 and the bridge 14, at least to reduce the likelihood of jamming of the device 10 at the beginning of the movement of the bridge 14 relative to the guides 18, 20.

It should be noted that the connection of the bearing nodes 26, 28 with the bridge 14 can be performed differently than described above. So, this connecting node may include a connecting rod or other rotary-rotational connecting device.

The plate 30 has a guide means made in the form of guide rollers 30A, 30B to prevent derailment of the guides made in the form of ball bearings or similar devices to ensure constant interaction of the bearing nodes 26, 28 with the guide 18. The guide rollers 30A, 30B are designed to prevent the fall of the bridge 14 and the crane on the floor when the rollers 32, 34, 36, 38 or other parts of the bearing units 26, 28 fail.

The bridge 14 and the guides 18, 20 are made of cold rolled steel in the form of a pipe or rod.

It should be noted that part (s) of the construction described above can (can) be built into the existing lifting devices. In this regard, the applicant provides for the possibility of incorporating, in whole or in part, into the existing lifting devices of the structures shown in FIGS. 2, 3, 5 and 6.

Figure 4 shows a lifting device 10 having guides 18, 20 made in the form of T-beams, and not in the form of C-shaped beams with an open channel. As shown in the drawings, in this embodiment, the wheels 32, 34, 36 and 38 of the bearing units 26, 28 are located on the shelves of the beams.

Figure 5 and 6 shows the bearing nodes 26, made with the possibility of installation on the guide 18 having a double tee profile. Similarly, the trolley 13 can be mounted on a bridge T-profile (not shown).

The lifting device 10 shown in the drawings may be configured to provide lifting loads of up to half a ton. However, it should be noted that the proposed device 10 can be performed with the lifting of any load, including loads weighing more than half a ton.

It has been found that thanks to the present invention, the effect of jamming inherent in existing lifting devices is at least reduced.

It was also found that the proposed device is applicable at least for situations where the guides 18, 20 are installed with a deviation from parallelism.

In addition, it was found that thanks to the present invention, the operator's effort required to start moving the bridge 14 along the guides 18, 20 is less than the force that needs to be applied in known devices.

An important advantage of the present invention is the possibility of its implementation in existing lifting devices without special difficulties.

In conclusion, it should be noted that various changes, modifications and / or additions can be made to the design and arrangement of the parts described above without departing from the essence of the invention or going beyond its scope. For example, a lifting device may include several parallel guides and several bridges.

Claims (26)

1. A lifting device comprising:
two suspended parallel guides,
two bearing nodes, each of which is connected with the corresponding guide and is made with the possibility of longitudinal movement along the corresponding guide,
a connecting node made in the form of a hinge connection of each bearing node with the corresponding end of the bridge, and
attachment means associated with the bridge to hold the lift,
moreover, the connecting node contains a universal hinge to compensate for the rotary and lateral movement of the bridge when applying force to the mounting means, which includes a bracket pivotally connected to the bridge and pivotally connected to the bearing node by means of a ball joint. 2. The lifting device according to claim 1, characterized in that it further comprises a trolley that is located on the bridge and is movable along it, while the fastening means is attached to the trolley. 3. The lifting device according to claim 1, characterized in that the bracket is pivotally connected to the suspension of the bearing node. 4. The lifting device according to claim 1, characterized in that the ball bearing is located on the bearing surface attached to the bearing node. 5. The lifting device according to claim 4, characterized in that the bearing surface is made of plastic. 6. The lifting device according to claim 4, characterized in that the bearing surface is made of nylon. 7. The lifting device according to claim 1, characterized in that the bracket is made of steel. 8. The lifting device according to claim 7, characterized in that the bridge further comprises a bracket attached to at least one end thereof. 9. The lifting device according to claim 8, characterized in that the bracket is pivotally connected to the bridge bracket. 10. The lifting device according to claim 8, characterized in that the bracket is connected to the bridge bracket by means of a swivel joint. 11. The lifting device according to claim 1, characterized in that it comprises at least one additional bridge pivotally attached at each end to one load-bearing assembly connected to a parallel guide. 12. The lifting device according to claim 1, characterized in that the supporting unit contains a guide means. 13. The lifting device according to item 12, wherein the guide means is made in the form of guide rollers. 14. The lifting device according to claim 1, characterized in that it contains at least one additional parallel guide, as well as at least one supporting unit connected to the corresponding additional guide and made to move along this guide. 15. The lifting device according to claim 1, characterized in that the bridge is made in the form of a beam. 16. The lifting device according to clause 15, wherein the beam is an I-beam. 17. The lifting device according to clause 15, wherein the beam is hollow and has a C-shaped section. 18. The lifting device according to claim 1, characterized in that the rails are attached to the ceiling. 19. The lifting device according to claim 1, characterized in that the guides are suspended from the superstructure at the required height. 20. The lifting device according to claim 1, characterized in that the supporting unit contains a means of preventing the descent from the rails. 21. The lifting device according to claim 20, characterized in that the means for preventing the descent from the rails is made in the form of guide rollers. 22. The lifting device according to claim 1, characterized in that the supporting unit contains at least one mounting plate to which the rollers are attached. 23. The lifting device according to item 22, wherein the rollers are wheels. 24. The lifting device according to item 22, wherein the rollers are ball bearings. 25. A lifting device comprising:
two parallel guides, made with the possibility of attachment to the superstructure,
two bearing nodes, each of which is associated with a corresponding guide, wherein each bearing node includes at least one mounting plate, made with the possibility of longitudinal movement along the corresponding guide using rollers attached to the mounting plate for rotation,
a suspension rigidly attached to each of the mounting plates,
a bridge made with the possibility of connection with the bearing nodes, while the bridge is made with the possibility of relative movement relative to the bearing nodes,
the bracket rigidly fastened by the end of the bridge,
a connecting node connected to the bridge to hold the lift, while the connecting node is made with the possibility of longitudinal movement along the bridge, and
an arm pivotally connected to the suspension by means of a ball joint and pivotally connected to the bridge bracket by means of a corresponding fastening element and a corresponding suspension placed between the bracket and the bridge bracket. 26. The lifting device according A.25, characterized in that the mounting plate of each bearing node further comprises a means of preventing the descent from the rails, which includes at least two ball bearings made with the possibility of ensuring the state of connection of the bearing node with the corresponding guide.

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